Getting a negative review removed isn’t impossible, but it isn’t guaranteed...

https://www.bookmark-tango.win/dealing-with-a-unfair-google-review-can-feel-personal-but-you-have-options

Getting a negative review removed isn’t impossible, but it isn’t guaranteed either. Google will delete feedback if it clearly violates their content policies, such as spam or hate speech. Outcomes vary based on the specific circumstances of each case